What Is Jenkins? How & Why To Use It?

What Is Jenkins? How & Why To Use It?

In this blog as we try to answer ‘what is Jenkins’, we also deep dive into what is Jenkins pipeline, how does Jenkins works, and more. We would also demonstrate continuous testing with Jenkins using the Jenkins Maven project and Jenkins pipelines.

Continuous Integration & Continuous Delivery are integral parts of DevOps, as they are used for integrating multiple stages of the methodology. There are many CI/CD tools in the market but Jenkins; the Java-based open-source CI/CD tool tops the popularity list. A small survey conducted by us further escalates Jenkins’ popularity of, leading up to the occasional query of ‘What is Jenkins?’

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In this blog as we try to answer ‘what is Jenkins’, we also deep dive into what is Jenkins pipeline, how does Jenkins works, and more. We would also demonstrate continuous testing with Jenkins using the Jenkins Maven project and Jenkins pipelines. As you finish this blog, you’ll not only find out what is Jenkins, you will also gain sufficient confidence to use Jenkins for continuous testing in DevOps.

What Is Jenkins?

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Jenkins is an open-source server that is written entirely in Java. It lets you execute a series of actions to achieve the continuous integration process, that too in an automated fashion.

This CI server runs in servlet containers such as Apache Tomcat. Jenkins facilitates continuous integration and continuous delivery in software projects by automating parts related to build, test, and deployment. This makes it easy for developers to continuously work on the betterment of the product by integrating changes to the project.

Jenkins automates the software builds in a continuous manner and lets the developers know about the errors at an early stage. A strong Jenkins community is one of the prime reasons for its popularity. Jenkins is not only extensible but also has a thriving plugin ecosystem.

Some of the possible steps that can be performed using Jenkins are:

  • Software build using build systems such as Gradle, Maven, and more.
  • Automation testing using test frameworks such as Nose2, PyTest, Robot, Selenium, and more.
  • Execute test scripts (using Windows terminal, Linux shell, etc.
  • Achieve test results and perform post actions such as printing test reports, and more.
  • Execute test scenarios against different input combinations for obtaining improved test coverage.
  • Continuous Integration (CI) where the artifacts are automatically created and tested. This aids in the identification of issues in the product at an early stage of development.

At the time of what is Jenkins blog, it had close to 1500+ plugins contributed by the community. Plugins help in customizing the experience with Jenkins, along with providing support for accelerating activities related to building, deploying, and automating a project.

jenkins devops continous-integration automation continous-deployment

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